桢楠引种栽培早期生长分析

Analysis of Early Growth about the Introduction and Cultivation of Phoebe zhennan

桢楠为我国亚热带中部地区驰名中外的珍贵用材阔叶树种,南移引种到热带北缘地区进行栽培试验,种植半年后每半年在同一样地调查,不论树高和地径,其生长量差异均达极显著水平。结果表明,下坡位2年生的平均树高可达203.6 cm,平均地径达2.6 cm;上坡位2年生的平均树高可达127.8 cm,平均地径达1.4 cm,苗木生长发育良好。

Phoebe zhennan is a well-known and precious timber that grows in central subtropical area.this kind of broad-leaved tree was introduced to tropical northern margin culture experiment. 0.5 a after introduction, investigation was launched in the same field twice a year. The result of investigations showed that regardless of tree height and ground diameter, growth of Phoebe zhennan achieved significarve level, 2 a downhill trees average height was 203.6 cm, and average ground diameter of them was 2.6 cm, For 2 a uphill tree, height was 127.8 cm and overage ground diameter was 1.4 cm, Results of this experiment revealed that thers trees developed normally.